Valve



O. E. JURGENSEN.

VALVE.

APPLICATION FILED MAY 26, I92

LQELBQ.

- Patented Oct. MLIQZZ.

then more Patented Get. 10, 1922..

otav Esau. JonGEnsEN, on NEW YORK, N. Y.

VALVE.

Application filed May 26,

T 0 all whom-it may concern:

Be it known that I, OLAV Esmn J oRGEN- SEN, a subject of Denmark, residing at- New ork, county of New York, and State of New York, have invented certain new and us ul Improvements in Valves, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to valves.

It is the principal object of the invention to provide a valve structure in which the valve member, upon opening, abuts against a metal. plate, such'that the jar of impact is lessened and at the same time such that the metal plate is not subject to undue wear or breakage. With this general object in view, the invention consists in the combinations, details of construction and arrangement of parts which will first be described in connection with the accompanying drawing and particularly pointed out.

The drawing shows a cross-sectional view of a valve constructed in accordance with the invention.

Referring to the drawing, a valve casing 1, which may be of any desired construction, is shown mounted in a valveideck 2, or the like. Connected with the casing 1, in any suitable manner, is a central hub or stem 3. Between the casing and this stem is an annular fluid passage 4:. To close the passage 4 an annular valve member is provided and in structures embodying the invention to the best advantage this valve member is cupshaped, the cup being symmetrical. Although capable of various constructions, in the present embodiment, the valve member 5 is H-shaped in cross-section, as appears in the drawing. This valve member is guided by sliding on a reduced portion 6 of the stem 3, this reduction forming ashoulder 7 The valve 5 seats on this shoulder and on the casing 1. j

The cup formed by the upper part of the H-shaped valve is symmetrical. That is to say, the two sides are of equal length. This cup forms a seat for a loading spring 8.

he invention includes a metal plate against which the valve abuts and a yieldablebackin'g therefor. In the present exemplification, resting on ashoulder 9 formed on the central stem is an annular, flat metal plate 10 preferably formed of thin steel. While the yieldable backing for this steel 1920. Serial No. 384,442.

plate may be of various constructions and materials, in the present embodiment the plate is backed by an asbestos washer 11. This provides not only a yielding backing but one that is not injured by the high temperatures that are often encountered, in air compressors, for instance.

The washer 11 and plate 10 are held against the shoulder 9 by anabutment member 12 which is held in place by a nut 13 on the threaded end of the central stem.

With. the construction described, a hard steel plate is provided as an abutment for the valve. At the same time, the yieldable backing avoids undue jar and the like and with a symmetrical cup shaped valve and a flat plate, the plate is not subject to undue wear and breakage.

What is claimed is:

1. In a valve structure, a valve member, a loading spring therefor, a metal plate against which the valve abuts, and a cushioning backing for said metal plate.

2. In a valve structure anannular s mi metrical cup-shaped valve member, a loading spring therefor, a flat metal plate against which the valve member abuts, and a yieldable backing for said metal plate.

In a valve structure, a valve member, a loading spring therefor, a metal plate against which the valve abuts, and an asbestos cushioning backing for said metal plate.

4. In a valve structure, a shouldered valve stem, an annular symmetrical cup-shaped valve member guided on said stem, a loading spring for the valve member, a flat metal plate resting on the shoulder of the stem and against which the valve member abuts, an abutment on the stem, and an asbestos washer between said abutment and the metal plate.

5. In a valve structure, a shouldered valve stem, an annular symmetrical cup-shaped valve member guided on said stem, a loading spring for the valve member, a flat metal plateresting on the shoulder of the stem and against which the valve member abuts, an abutment on the stem, and a yieldable washer between said abutment and the metal late. p In testimony whereof, I have hereunto set my hand.

I OLAV ESKIL JoReENsEN. 

